Differ Ariake (ディファ有明, Difa Ariake), originally MZA Ariake, was an indoor sporting arena located in the Ariake neighborhood of Tokyo, Japan. It was open from July of 1988 until closing sometime 1991. It later reopened in 1999 as Differ Ariake.
The capacity of the arena was 1,246 seats. It was mainly used for professional wrestling and martial arts events. The arena became known as the home of Pro Wrestling Noah, housing the promotion's offices and training dojo.[1]